I actually bought the hemp and mircrofiber from Wallypop.net, prepped it and my MIL did the serging for me (I can sew, but don't have a serger right now). A lot cheaper if you have a serger or if you know someone who does and not complicated at all. Then you can also make them whatever size you want.

We use primarily hemp because they are more absorbent and our DD needs more absorbancy now. Sometimes I will add a MF or bamboo as a doubler for naptime, longer car rides, or when she's had a lot to drink.

We started out using only MF and probably would never have switched if we didn't need the higher absorbancy of hemp.